1. Start with two famous quotes to pave the way for the following three huts that people need to build spiritually, and then put forward their own opinions naturally.

2. The author advocates, "Let a ray of holy sunshine shine in from the skylight", that is, only when the heart is filled with love can people be happy forever.

3. Without a career, a fulfilling spiritual world will inevitably be filled with other messy things, and people will not be fulfilled.